# by luffycity.com

# print(1+1)
# print(1-1)
# print(1*2)
# print(1/2)

# print(10%3) # 计算余数  10/3=3......1

# n = 49
# if n % 2 == 1:
#     print("奇数")
# else:
#     print("偶数")

# print(10//3) # 整除. 地板除. 计算商

# print(5**3) # 5的2次幂  m**n  m的n次幂

# a = 10
# b = 20
# print(a == b) # 等于
# print(a != b)   # 不等于

a = 1
b = 2
a += b # a = 3    a+=b  => a = a + b
# a *= b  =>  a = a * b
print(a)
print(b)
